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A rectangular field's length is 5 m more than thrice its breadth.
Its perimeter is 90 m.
Find the length of the field (in m).

Class 8Word ProblemsLinear Equations

A30
B32
C35
D40

Step-by-Step Solution

Breadth =

b

, length =

3 b + 5.2 (b + 3 b + 5) = 90

, so

(4 b + 5) = 45, 4 b = 40, b = 10

. Length =

3 (10) + 5 = 35

m.

Answer: C) 35

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